Arming teachers means we can now blame them if they don’t stop the next mass shooter

True the shooter at Santa Fe High didn’t have an AR-15 or similar rifle, instead a shotgun. The shooter in Parkland did, however. And so did the shooter at the church massacre of 26 in Sutherland Springs, Texas, shooting, who shot first through the front and side exterior walls, invisible to those inside, before entering the church to complete his rampage.